653
FNCA52 TJSJ 131930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST WED MAY 13 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-140800-
SOUTHEAST COASTAL PLAINS-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 60 40 50
TEMP (24H TREND) 72 (-2) 89 (+2) 72 89
RH % (24H TREND) 92 (+5) 54 (-4) 92 54
WIND 20FT/EARLY(MPH) E 11 E 14 E 11 E 13
WIND 20FT/LATE(MPH) E 11 SE 14 E 10 SE 13
MIXING HGT(FT-AGL/MSL) 4710 4790
TRANSPORT WND (MPH) SE 17 SE 16
VENT RATE (KT-FT) 70650 67060
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-140800-
SOUTHERN HILLS-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40 30 40
TEMP (24H TREND) 69 (-2) 86 (+3) 69 86
RH % (24H TREND) 97 (+4) 63 (-4) 98 63
WIND 20FT/EARLY(MPH) E 12 SE 13 E 10 E 11
WIND 20FT/LATE(MPH) E 13 SE 13 E 11 SE 11
MIXING HGT(FT-AGL/MSL) 5620 5730
TRANSPORT WND (MPH) SE 17 SE 15
VENT RATE (KT-FT) 84300 74490
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-140800-
NORTH COASTAL PLAINS-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 10 30
TEMP (24H TREND) 72 (-1) 91 (+1) 72 92
RH % (24H TREND) 95 (+2) 56 (-3) 96 56
WIND 20FT/EARLY(MPH) SE 11 SE 13 SE 11 E 12
WIND 20FT/LATE(MPH) SE 11 E 16 E 11 E 16
MIXING HGT(FT-AGL/MSL) 6300 5580
TRANSPORT WND (MPH) SE 15 SE 13
VENT RATE (KT-FT) 81900 61380
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-140800-
NORTHERN HILLS-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 0 50
TEMP (24H TREND) 70 (-1) 91 (+3) 70 91
RH % (24H TREND) 96 (+2) 57 (-2) 97 57
WIND 20FT/EARLY(MPH) SE 10 SE 11 SE 10 E 11
WIND 20FT/LATE(MPH) SE 5 SE 12 E 6 E 14
MIXING HGT(FT-AGL/MSL) 6510 6470
TRANSPORT WND (MPH) SE 14 SE 12
VENT RATE (KT-FT) 78120 64700
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-140800-
WEST COAST-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 40 10 30
TEMP (24H TREND) 73 (0) 91 (+1) 73 91
RH % (24H TREND) 95 (+3) 59 (-2) 95 58
WIND 20FT/EARLY(MPH) SE 12 SE 16 E 12 E 13
WIND 20FT/LATE(MPH) E 12 SE 16 E 10 E 12
MIXING HGT(FT-AGL/MSL) 5270 5310
TRANSPORT WND (MPH) SE 17 SE 13
VENT RATE (KT-FT) 79050 58410
DISPERSION 5 5
DSI 4 6 3 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-140800-
EASTERN INTERIOR-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40 40 50
TEMP (24H TREND) 70 (-2) 88 (+2) 70 88
RH % (24H TREND) 98 (+3) 61 (-4) 98 61
WIND 20FT/EARLY(MPH) SE 13 SE 14 SE 12 SE 13
WIND 20FT/LATE(MPH) SE 14 SE 14 E 13 E 13
MIXING HGT(FT-AGL/MSL) 5810 5860
TRANSPORT WND (MPH) SE 17 SE 15
VENT RATE (KT-FT) 87150 76180
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-140800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40 40 50
TEMP (24H TREND) 68 (-3) 83 (+3) 68 83
RH % (24H TREND) 99 (+1) 69 (-6) 100 70
WIND 20FT/EARLY(MPH) SE 10 SE 12 SE 10 SE 11
WIND 20FT/LATE(MPH) SE 12 SE 12 E 11 E 11
MIXING HGT(FT-AGL/MSL) 4410 4290
TRANSPORT WND (MPH) SE 18 SE 15
VENT RATE (KT-FT) 70560 55770
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-140800-
CENTRAL MOUNTAIN RANGE-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 0 50
TEMP (24H TREND) 67 (-2) 87 (+5) 67 87
RH % (24H TREND) 98 (+4) 62 (-4) 98 61
WIND 20FT/EARLY(MPH) SE 6 SE 11 SE 6 SE 10
WIND 20FT/LATE(MPH) SE 6 SE 12 E 5 SE 9
MIXING HGT(FT-AGL/MSL) 6470 6860
TRANSPORT WND (MPH) SE 16 SE 12
VENT RATE (KT-FT) 90580 68600
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-140800-
CAYEY MOUNTAIN RANGE-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 60 40 50
TEMP (24H TREND) 69 (-1) 82 (+2) 69 82
RH % (24H TREND) 100 (+2) 71 (-2) 100 69
WIND 20FT/EARLY(MPH) SE 10 SE 12 E 8 E 10
WIND 20FT/LATE(MPH) SE 11 SE 11 E 9 E 10
MIXING HGT(FT-AGL/MSL) 4680 4370
TRANSPORT WND (MPH) SE 17 SE 15
VENT RATE (KT-FT) 70200 56810
DISPERSION 5 5
DSI 5 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-140800-
VIEQUES-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 40 30
TEMP (24H TREND) 75 (-1) 88 (+1) 74 88
RH % (24H TREND) 92 (+3) 62 (-3) 93 62
WIND 20FT/EARLY(MPH) E 17 SE 18 E 16 E 16
WIND 20FT/LATE(MPH) E 18 SE 16 E 17 E 14
MIXING HGT(FT-AGL/MSL) 3460 3410
TRANSPORT WND (MPH) SE 23 SE 21
VENT RATE (KT-FT) 69200 61380
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-140800-
CULEBRA-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 30 30
TEMP (24H TREND) 76 (-2) 89 (+2) 76 89
RH % (24H TREND) 90 (+3) 60 (-6) 92 60
WIND 20FT/EARLY(MPH) E 17 SE 18 E 16 E 17
WIND 20FT/LATE(MPH) E 18 SE 17 E 17 E 14
MIXING HGT(FT-AGL/MSL) 3590 3470
TRANSPORT WND (MPH) SE 23 SE 21
VENT RATE (KT-FT) 71800 62460
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-140800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 20 30
TEMP (24H TREND) 73 (-2) 91 (+2) 73 91
RH % (24H TREND) 93 (+7) 50 (-6) 91 50
WIND 20FT/EARLY(MPH) E 17 E 19 E 17 E 17
WIND 20FT/LATE(MPH) E 17 SE 19 E 16 SE 17
MIXING HGT(FT-AGL/MSL) 5000 5080
TRANSPORT WND (MPH) SE 21 SE 18
VENT RATE (KT-FT) 90000 81280
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-140800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 30 30
TEMP (24H TREND) 75 (-3) 86 (+1) 75 86
RH % (24H TREND) 92 (+6) 65 (-3) 94 66
WIND 20FT/EARLY(MPH) E 18 SE 18 E 17 E 17
WIND 20FT/LATE(MPH) E 19 SE 17 E 18 E 14
MIXING HGT(FT-AGL/MSL) 3600 3420
TRANSPORT WND (MPH) SE 18 SE 22
VENT RATE (KT-FT) 57600 64980
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-140800-
ST CROIX-
330 PM AST WED MAY 13 2026
TONIGHT THU THU NIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 30 30
TEMP (24H TREND) 74 (-3) 87 (+1) 74 87
RH % (24H TREND) 93 (+5) 64 (-4) 93 65
WIND 20FT/EARLY(MPH) E 16 E 17 E 16 E 16
WIND 20FT/LATE(MPH) E 17 E 16 E 16 E 16
MIXING HGT(FT-AGL/MSL) 4740 4620
TRANSPORT WND (MPH) SE 21 SE 21
VENT RATE (KT-FT) 85320 83160
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page